British far-right protesters daubed swastikas in blood on buses in the southern England port city of Dover on Saturday, as a demonstration against immigration into the country descended into violence.
The coastal city is the arrival point of ferries from Calais and Dunkirk in northern France.
Kent Police said a total of nine people were arrested, including one at an incident at a highway service station that was believed to be linked to the protests.
More than 20 weapons were recovered, including a knife, brass knuckles and pieces of wood, glass, hammers and bricks, police said.
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One person suffered a broken arm and five others sustained minor injuries at the rallies. In addition, six other people suffered “non-life threatening” injuries at the service station incident.
British newspaper the Daily Mail showed images of the swastikas, shattered bus windows and bloodied skinheads grappling with police. Protesters brandished English, United Kingdom and National Front flags and signs calling for the government to prevent migrants and refugees from entering the UK.
The protest by the National Front and the South East Alliance demonstration was met with a counter-rally organized by two groups of opponents: Dover Stand Up to Racism and the Kent Anti-Racism Network.
One counter-protester told the Mail: “They attacked one of our coaches and smashed up the windows and one of them came and daubed a swastika in blood on the side of one of the coaches.”
A strong police deployment largely kept the peace but there was pushing and shoving throughout the day. Some bricks and smoke bombs were thrown.
Officials said Saturday evening the protest was winding down after a day in which police used cordons to keep the rival groups apart.